How to check whether there is a route between two hosts for a particular port (e.g. 1433).
with 'ip route get ADDRESS' you can check the route configured in your system, that is, the first hop:
to check the port connectivity, a simple telnet should do:
Fisrt, you must know that, the
Imagining two host is two house, port is gate of the house, route is road. You can build many roads between houses. But when you reach a house, if the house's gate is closed, you can not come in.
For you comment question, you could use some command like:
To check route exists:
To check open port:
Read it manpage and try using.